1TZD:
reference: Crystal structure of the catalytic core of inositol 1,4,5-trisphosphate 3-kinase., Miller GJ, Hurley JH, Mol Cell 2004 Sep 10;15(5):703-11. PMID: 15350215

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).